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<head><title>OpenVPN Certificates</title></head>
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   <h2>Certificates</h2>
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<p>Used to define OpenVPN security details.</p>
<p>OpenVPN supports three authentication/encryption modes.</p>

<ul>
<li><b>None</b> - communication w/o any encryption/authentication.</li>
<li><b>Static key</b> - communication based on a symmetric pre-shared static key</li>
<li><b>SSL/TLS</b> - communication based on X509 certificates</li>
</ul>

<p>Complete the key information by entering the information into the following fields:</p>
<p><b>Secret:</b> the file containing the pre-shared key (static mode only).</p>
<p><b>Certificate:</b> the file containing the local X509 certificate signed by certificate authority (SSL/TLS mode only).</p>
<p><b>Private Key:</b> the local private key file (SSL/TLS mode only).</p>
<p><b>CA:</b> the certificate authority file (SSL/TLS mode only).</p>
<p><b>TLS auth:</b> additional and option tls authentication layer (SSL/TLS mode only). TLS authentication 
is an optional layer of security and is not required for SSL/TLS.</p>

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